The Blackwire C3210 Series includes corded UC headsets that are durable, comfortable, easy to deploy and come in a variety of connectivity and wearing options. Blackwire 3200 Series with Poly signature audio provides top notch features at a price you can afford.. Wired USB headset . Perfect for listening, calls and meetings. Advanced hybrid active noise cancelling (ANC) with three settings to optimize. Immerse yourself in rich, clear audio. Connect quickly and easily - plug and play. Concentrate in comfort